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As mentioned elsewhere, most of the smart switches require a neutral connection so that they can take a little current in order to operate the internal electronics. Theoretically, it would be possible run neutral wires if you have them close by (from the breaker or a different socket/switch) but that's not going to meet code. Good news is that there are ...


Unfortunately, that style of wiring -- essentially a "switched loop" -- is not compatible with "smart" switches that require a neutral. The 2011 NEC finally recognized this and now requires neutral at switches, but your home obviously predates that requirement. There are a few options, but none are easy/cheap: New wire Replace the wire between switch ...

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